WO2019161674A1

WO2019161674A1 - Battery recognition method, unmanned aerial vehicle and battery

Info

Publication number: WO2019161674A1
Application number: PCT/CN2018/111730
Authority: WO
Inventors: 秦威; 刘玉华
Original assignee: 深圳市道通智能航空技术有限公司
Priority date: 2018-02-24
Filing date: 2018-10-24
Publication date: 2019-08-29
Also published as: CN108377191A

Abstract

The present invention provides a battery recognition method, an unmanned aerial vehicle and a battery. The method is applied to unmanned aerial vehicles, and the method comprises: generating an input code, and sending the input code to a battery, so that the battery generates a first authentication code by using an SHA-1 algorithm according to the input code and a first key; receiving the first authentication code sent by the battery; according to the input code and a second key, generating a second authentication code by using the SHA-1 algorithm; recognizing the battery according to the first authentication code and the second authentication code; the first key being the same as the second key. The recognition algorithm provided in the embodiment of the present invention uses the SHA-1 algorithm for encryption, and achieves high security.

Description

Battery identification method, drone and battery

The application claims priority to Chinese Patent Application No. 20110115767, filed on Feb. 24, 20,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Technical field

The present invention relates to the field of battery identification technologies, and in particular, to a battery identification method, a drone, and a battery.

Background technique

With the advancement of science and technology, drones can be applied to many fields, such as electric power inspection, map mapping, traffic control security, advertising celebrations, etc., with broad development space.

At present, the UAV industry is limited by the battery technology. The flight time of a battery is generally short, and the high-rate battery is generally used. The high-current charge and discharge makes the battery cycle performance worse. Batteries generally support disassembly, so drone enthusiasts typically purchase multiple batteries for replacement. However, users are more likely to purchase batteries that are not produced by legally authorized manufacturers. Due to the unstable performance of the illegal battery, the drone cannot obtain stable power from the battery during use, and the probability of the drone falling from the air is greatly increased, thereby shortening the service life of the drone. Therefore, on the one hand, the UAV manufacturers use genuine batteries to protect consumers, and on the other hand, in order to protect their own commercial interests, the batteries are certified and recognized when they are used.

At present, the conventional battery identification method is a method of hardware resistance recognition, but the security is low and easy to crack.

Summary of the invention

Embodiments of the present invention provide a battery identification method, a drone, and a battery to improve the safety of the battery identification of the drone.

In a first aspect, an embodiment of the present invention provides a battery identification method, including:

Generating an input code, and transmitting the input code to a battery, so that the battery generates a first authentication code by using a SHA-1 algorithm according to the input code and the first key;

Receiving the first authentication code sent by the battery;

Generating a second authentication code by using a SHA-1 algorithm according to the input code and the second key;

Identifying the battery according to the first authentication code and the second authentication code;

The first key is the same as the second key.

In a second aspect, an embodiment of the present invention provides a battery identification method, including:

Receiving an input code sent by the drone;

Generating a first authentication code by using a SHA-1 algorithm according to the input code and the first key;

Sending the first authentication code to the drone, so that the drone identifies the battery according to the first authentication code and the second authentication code generated by the drone; The second authentication code is generated by the UAV according to the input code and the second key by using a SHA-1 algorithm;

The first key is the same as the second key.

In a third aspect, an embodiment of the present invention provides a drone, including:

a processing module for generating an input code;

a sending module, configured to send the input code to a battery, so that the battery generates a first authentication code by using a SHA-1 algorithm according to the input code and the first key;

a receiving module, configured to receive the first authentication code sent by the battery;

The processing module is further configured to generate a second authentication code by using a SHA-1 algorithm according to the input code and the second key;

The first key is the same as the second key.

In a fourth aspect, an embodiment of the present invention provides a battery, including:

a receiving module, configured to receive an input code sent by the drone;

a processing module, configured to generate a first authentication code by using a SHA-1 algorithm according to the input code and the first key;

a sending module, configured to send the first authentication code to the drone, so that the drone according to the first authentication code and the second authentication code generated by the drone Identifying, by the battery, the second authentication code is generated by the UAV according to the input code and the second key by using a SHA-1 algorithm; wherein the first key is the same as the second key .

The battery identification method, the drone, and the battery provided by the embodiment of the present invention generate an input code, and send the input code to the battery, so that the battery utilizes a secure hash algorithm according to the input code and the first key. The SHA-1 algorithm generates a first authentication code, receives the first authentication code sent by the battery, and generates a second authentication code by using a SHA-1 algorithm according to the input code and the second key; The authentication code and the second authentication code identify the battery, wherein the first key is the same as the second key, and the SHA-1 algorithm uses a SHA-1 algorithm because of the high security of the SHA-1 algorithm. The identification process is highly secure, as long as the key in the battery is different from the key of the drone, the identification is unsuccessful and the use of illegal batteries is avoided.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and those skilled in the art can obtain drawings of other embodiments according to the drawings without any creative work. The accompanying drawings, which are incorporated in the specification

1 is a schematic flow chart of an embodiment of a battery identification method provided by the present invention;

2 is a schematic flow chart of another embodiment of a battery identification method provided by the present invention;

3 is a schematic flow chart of still another embodiment of a battery identification method provided by the present invention.

4 is a schematic structural view of an embodiment of a drone provided by the present invention;

5 is a schematic structural view of an embodiment of a battery provided by the present invention;

6 is a schematic structural view of another embodiment of the drone provided by the present invention;

FIG. 7 is a schematic structural view of another embodiment of a battery provided by the present invention.

The embodiments of the present disclosure have been shown by the above-described drawings, which will be described in more detail later. The drawings and the text are not intended to limit the scope of the present disclosure in any way, and the description of the present disclosure will be described by those skilled in the art by reference to the specific embodiments.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description of the drawings refers to the same or similar elements in the different figures unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of methods and apparatus consistent with aspects of the present disclosure as detailed in the appended claims.

The terms "comprises" and "comprising" and variations of the invention are intended to be inclusive of the invention. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively Other steps or units inherent to these processes, methods, products or equipment.

The method of the embodiment of the present invention can be applied to the UAV to identify the battery used in the UAV. It should be noted that the method of the embodiment of the present invention can also be applied to other devices, and the present invention does not limited.

The battery identification method of the embodiment of the present invention aims to improve the safety of the battery identification process, thereby preventing the user from using the illegal battery and avoiding the problem that the life of the drone is shortened due to the use of the illegal battery.

The technical solutions of the present invention will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.

FIG. 1 is a schematic flow chart of an embodiment of a battery identification method provided by the present invention. As shown in FIG. 1 and FIG. 2, the method provided in this embodiment includes:

Step 101: Generate an input code, and send the input code to a battery, so that the battery generates a first authentication code by using a SHA-1 algorithm according to the input code and the first key.

SHA (Secure Hash Algorithm) is also called hash algorithm. The SHA-1 algorithm is one of the five algorithms in the SHA family.

In this step, when the battery is installed on the drone, an input code needs to be generated, so that the subsequent step identifies whether the battery is a battery produced by a legal authorized manufacturer. Once the battery is identified as an illegal battery, the drone will not be allowed to use the battery.

Optionally, step 101 can be implemented in the following manner:

The 160-bit input code that satisfies the security criteria required by the SHA-1 algorithm is generated using a random function.

Specifically, at the time of identification, the host of the drone will first randomly generate a 160-bit input code M that satisfies safety standards, such as the FIPS PUB 140-2 standard (NIST issued safety requirements standard), using a random function.

After the input code M is generated, it needs to be sent to the battery, so that the battery can generate the first authentication code by using the SHA-1 algorithm according to the input code and the first key (such as the key K2 in FIG. 2) (as shown in FIG. 2). Authentication code HMAC2). The first key is the key of the SHA-1 algorithm saved in the battery.

Step 102: Receive the first authentication code sent by the battery.

Step 103: Generate a second authentication code by using a SHA-1 algorithm according to the input code and the second key.

In this step, the drone generates a second authentication code by using the SHA-1 algorithm according to the input code and the second key.

The second key is the same as the first key, so as to ensure that the generated first authentication code and the second authentication code are the same, so that the success can be recognized.

Optionally, step 103 can be implemented in the following manner:

Embedding the input code into the second key to generate a first data string;

Compensating the first data string and data blocking to obtain at least one data block;

Generating the second authentication code using at least one of the data blocks using a SHA-1 algorithm.

Optionally, in the step of performing the complementing of the second data string and the data partitioning to obtain at least one data block, the data is divided into blocks according to the 512-bit data of each block.

The SHA-1 algorithm is a data encryption algorithm. The idea of the algorithm is to receive a plaintext, then embed the key, and then convert it into a set of 160-bit (20-byte) message digests with an irreversible hash operation. It can also be simply understood as a process of taking a sequence of input sequences and converting the input sequence into a short-length, fixed-digit output sequence, a hash value (also known as a message digest or information authentication code). Since the SHA-1 algorithm is irreversible and has a good avalanche effect, it is generally impossible to derive any original input sequence from the hash result, and any change in the original input sequence, even one bit, will result in a difference in hash results.

The specific generation process of the authentication code is: inserting the input code into the second key (such as the key K1 in FIG. 2) to generate the first data string; then performing the complement, complementing to a multiple of 512, and then following each block 512. The bit is subjected to data partitioning to obtain at least one data block, and then a hash operation of the SHA-1 algorithm is used to obtain a 160-bit second authentication code (such as the authentication code HMAC1 in FIG. 2).

Step 104: Identify the battery according to the first authentication code and the second authentication code.

Optionally, step 104 can be implemented in the following manner:

Comparing the first authentication code with the second authentication code;

If the first authentication code and the second authentication code are the same, the battery is allowed to be used;

If the first authentication code and the second authentication code are the same, an error prompt is made, or the drone is turned off.

Specifically, after receiving the first authentication code sent by the battery, the first authentication code and the second authentication code are used for identification. If the first authentication code and the second authentication code are the same, the identification is successful, and the drone is allowed to use. The battery; if the first authentication code and the second authentication code are different, indicating that the first key and the second key are different, the battery may not be a battery produced by a legal authorized manufacturer, and the drone will not allow the battery to be used. An error message or shut down the system of the drone.

In some embodiments, the battery powers the drone before the battery is successfully identified, and the drone uses the power provided by the battery to identify the battery. Once the battery is identified as an illegal smart battery, the battery is no longer allowed to be used. .

In some embodiments, the error prompt can be a voice prompt and/or a text prompt or the like.

It should be noted that

steps

102 and 103 are not in any order, and 102 may be executed before 103, or after, or simultaneously, which is not limited by the present invention.

Since the SHA-1 encryption algorithm is irreversible, anti-collision, and has a good avalanche effect, if the crack requires an operation of the order of 2^160, the security is high.

In the above identification process, the reliability of the identification method is high as long as the key is not leaked.

In the battery identification method of the embodiment, an input code is generated, and the input code is sent to a battery, so that the battery generates a first authentication by using a secure hash algorithm SHA-1 algorithm according to the input code and the first key. And receiving the first authentication code sent by the battery; generating a second authentication code by using a SHA-1 algorithm according to the input code and the second key; and according to the first authentication code and the second authentication The code identifies the battery, wherein the first key is the same as the second key, and the security of the SHA-1 algorithm is higher because of the higher security of the SHA-1 algorithm. As long as the key in the battery is different from the key of the drone, the identification is unsuccessful and the use of illegal batteries is avoided.

Based on the above embodiments, the above identification process using the SHA-1 algorithm is a process of communicating with each other, which requires the battery and the host of the drone to follow the SHA-1 protocol. Since the battery generally uses the power management chip with SHA-1 protocol, the SHA-1 protocol of the power management chip can be directly used without adding code to the battery microprocessor. If the power management chip used does not support SHA- 1 protocol, you need to add the code supporting the SHA-1 protocol in the battery's microprocessor. The host of the same drone also adds code to support the SHA-1 protocol. In order for the drone to successfully identify the battery, we need to set the same 128-bit key in the battery and the host of the drone. Take the Texas Instruments TI's power management chip as an example. The battery-side power management chip can use the bqstudio host computer software to change the key K2 through the Change Key option in the SHA authentication function module. (The power must be decrypted before changing the value. Management chip), the initial default value is "0123456789ABCDEFFEDCBA9876543210", the default value is hexadecimal, for example, changed to "FEDCBA98765432100123456789ABCDEF". The host side of the drone only needs to modify the key K1 to "FEDCBA98765432100123456789ABCDEF" in the system code.

In the method of the embodiment, the SHA-1 encryption algorithm of the power management chip of the battery itself is fully utilized, which can greatly reduce the program space of the microprocessor, and can reduce the development cost and the development cycle.

FIG. 3 is a schematic flow chart of another embodiment of a battery identification method provided by the present invention. As shown in FIG. 3, the method provided in this embodiment includes:

Step 301: Receive an input code sent by the drone;

Step 302: Generate a first authentication code by using a SHA-1 algorithm according to the input code and the first key.

Step 303: Send the first authentication code to the drone, so that the drone performs the battery according to the first authentication code and the second authentication code generated by the drone. Identifying; the second authentication code is generated by the UAV according to the input code and the second key by using a SHA-1 algorithm.

The first key is the same as the second key.

Specifically, when the UAV recognizes the battery, the generated input code is sent to the battery, and the battery generates the first authentication code by using the SHA-1 algorithm according to the input code and the first key, and then sends the first authentication code. Give the drone. The UAV identifies the second authentication code generated by itself and the received first authentication code, specifically comparing whether the first authentication code and the second authentication code are the same. If the same, the identification is successful, otherwise the identification fails.

Optionally, step 302 can be implemented in the following manner:

Embedding the input code into the first key to generate a second data string;

Compensating the second data string and data blocking to obtain at least one data block;

Generating the first authentication code using at least one of the data blocks using a SHA-1 algorithm.

Specifically, the process of generating the first authentication code in the battery is similar to that in the drone, and details are not described herein again.

The implementation principle of the method in this embodiment is similar to the method embodiment shown in FIG. 1, and details are not described herein again.

The battery identification method of the embodiment, receiving an input code sent by the drone; generating a first authentication code by using a SHA-1 algorithm according to the input code and the first key; and sending the first authentication code to the a drone, wherein the drone identifies the battery according to the first authentication code and a second authentication code generated by the drone; the second authentication code is the drone Generating according to the input code and the second key by using a SHA-1 algorithm, where the first key is the same as the second key, and because the security of the SHA-1 algorithm is high, the SHA- is adopted. 1 The identification process of the algorithm is highly secure. As long as the key in the battery is different from the key of the drone, the identification is unsuccessful and the use of illegal batteries is avoided.

4 is a structural diagram of an unmanned aerial vehicle according to an embodiment of the present invention. As shown in FIG. 3, the unmanned aerial vehicle of the present embodiment includes:

a processing module 401, configured to generate an input code;

The sending module 402 is configured to send the input code to the battery, so that the battery generates a first authentication code by using a SHA-1 algorithm according to the input code and the first key;

The receiving module 403 is configured to receive the first authentication code sent by the battery;

The processing module 401 is further configured to generate a second authentication code by using a SHA-1 algorithm according to the input code and the second key;

The first key is the same as the second key.

Optionally, the processing module 401 is specifically configured to:

Embedding the input code into the second key to generate a first data string;

The processing module 401 is specifically configured to:

Data is divided into blocks of 512 bits of data.

Optionally, the processing module 401 is specifically configured to:

Comparing the first authentication code with the second authentication code;

The device in this embodiment may be used to perform the technical solution of the method embodiment shown in FIG. 1 , and the implementation principle and technical effects are similar, and details are not described herein again.

FIG. 5 is a structural diagram of an embodiment of a battery provided by the present invention. As shown in FIG. 5, the battery of this embodiment includes:

The receiving module 501 is configured to receive an input code sent by the drone;

The processing module 502 is configured to generate a first authentication code by using a SHA-1 algorithm according to the input code and the first key;

The sending module 503 is configured to send the first authentication code to the drone, so that the drone is based on the first authentication code and the second authentication code generated by the drone. The battery is identified; the second authentication code is generated by the UAV according to the input code and the second key by using a SHA-1 algorithm; wherein the first key and the second key are the same.

Optionally, the processing module 502 is specifically configured to:

Embedding the input code into the first key to generate a second data string;

The processing module 401 is specifically configured to:

Data is divided into blocks of 512 bits of data.

The device in this embodiment may be used to perform the technical solution of the method embodiment shown in FIG. 3, and the implementation principle and the technical effect are similar, and details are not described herein again.

FIG. 6 is a structural diagram of another embodiment of a drone provided by the present invention. As shown in FIG. 6, the drone includes:

A processor 601, a drone communication port (not shown), and a memory 602 for storing executable instructions of the processor 601.

The processor 601 is configured to perform the corresponding method in the foregoing method embodiment by executing the executable instruction. For the specific implementation process, refer to the foregoing method embodiment, and details are not described herein again. The drone communication port enables communication between the drone and the battery for information transmission and reception.

FIG. 7 is a structural diagram of another embodiment of a battery provided by the present invention. As shown in FIG. 7, the battery includes:

A processor 701, a battery communication port (not shown), and a memory 702 for storing executable instructions of the processor 701.

Optionally, a power module is further included for supplying power to the drone.

The processor 701 is configured to perform the corresponding method in the foregoing method embodiment by executing the executable instruction. For the specific implementation process, refer to the foregoing method embodiment, and details are not described herein again. The battery communication port enables communication between the battery and the drone for information transmission and reception.

The embodiment of the present invention further provides a computer readable storage medium, where the computer program is stored, and when the computer program is executed by the processor, the corresponding method in the foregoing method embodiment is implemented, and the specific implementation process can be implemented by referring to the foregoing method. For example, the implementation principle and technical effects are similar, and will not be described here.

Other embodiments of the present disclosure will be apparent to those skilled in the <RTIgt; The present invention is intended to cover any variations, uses, or adaptations of the present disclosure, which are in accordance with the general principles of the present disclosure and include common general knowledge or common technical means in the art that are not disclosed in the present disclosure. . The specification and examples are to be regarded as illustrative only,

It is to be understood that the invention is not limited to the details of the details and The scope of the disclosure is to be limited only by the appended claims.

Claims

A battery identification method is characterized in that it is applied to a drone, and the method includes:

Generating an input code, and transmitting the input code to a battery, so that the battery generates a first authentication code by using a SHA-1 algorithm according to the input code and the first key;

Receiving the first authentication code sent by the battery;

Generating a second authentication code by using a SHA-1 algorithm according to the input code and the second key;

Identifying the battery according to the first authentication code and the second authentication code;

The first key is the same as the second key.
The method according to claim 1, wherein the generating the input code comprises:

The 160-bit input code that satisfies the security criteria required by the SHA-1 algorithm is generated using a random function.
The method according to claim 1, wherein the generating the second authentication code by using the SHA-1 algorithm according to the input code and the second key comprises:

Embedding the input code into the second key to generate a first data string;

Compensating the first data string and data blocking to obtain at least one data block;

Generating the second authentication code using at least one of the data blocks using a SHA-1 algorithm.
The method according to claim 3, wherein in the step of performing the complementing of the first data string and the data partitioning to obtain at least one data block, the data is divided into blocks according to 512 bits of data per block. .
The method according to claim 1, wherein the identifying the battery according to the first authentication code and the second authentication code comprises:

Comparing the first authentication code with the second authentication code;

If the first authentication code and the second authentication code are the same, the battery is allowed to be used;

If the first authentication code and the second authentication code are the same, an error prompt is made, or the drone is turned off.
A battery identification method, characterized by being applied to a battery of a drone, the method comprising:

Receiving an input code sent by the drone;

Generating a first authentication code by using a SHA-1 algorithm according to the input code and the first key;

Sending the first authentication code to the drone, so that the drone identifies the battery according to the first authentication code and the second authentication code generated by the drone; The second authentication code is generated by the UAV according to the input code and the second key by using a SHA-1 algorithm;

The first key is the same as the second key.
The method according to claim 6, wherein the generating the first authentication code by using the SHA-1 algorithm according to the input code and the first key comprises:

Embedding the input code into the first key to generate a second data string;

Compensating the second data string and data blocking to obtain at least one data block;

Generating the first authentication code using at least one of the data blocks using a SHA-1 algorithm.
The method according to claim 7, wherein in the step of performing the complementing of the second data string and the data partitioning to obtain at least one data block, the data is divided into blocks according to 512 bits of data per block. .
A drone, characterized in that it comprises:

a processing module for generating an input code;

a sending module, configured to send the input code to a battery, so that the battery generates a first authentication code by using a SHA-1 algorithm according to the input code and the first key;

a receiving module, configured to receive the first authentication code sent by the battery;

The processing module is further configured to generate a second authentication code by using a SHA-1 algorithm according to the input code and the second key;

Identifying the battery according to the first authentication code and the second authentication code;

The first key is the same as the second key.
The UAV according to claim 9, wherein the processing module is specifically configured to:

Embedding the input code into the second key to generate a first data string;

Compensating the first data string and data blocking to obtain at least one data block;

Generating the second authentication code using at least one of the data blocks using a SHA-1 algorithm.
A battery, comprising:

a receiving module, configured to receive an input code sent by the drone;

a processing module, configured to generate a first authentication code by using a SHA-1 algorithm according to the input code and the first key;

a sending module, configured to send the first authentication code to the drone, so that the drone according to the first authentication code and the second authentication code generated by the drone Identifying, by the battery, the second authentication code is generated by the UAV according to the input code and the second key by using a SHA-1 algorithm; wherein the first key is the same as the second key .
The battery according to claim 11, wherein the processing module is specifically configured to:

Embedding the input code into the first key to generate a second data string;

Compensating the second data string and data blocking to obtain at least one data block;

Generating the first authentication code using at least one of the data blocks using a SHA-1 algorithm.